干旱区生态环境知识资源中心(Arid): Effects of Different Ecological Restoration Pattern on Soil Organic Nitrogen Components in Alpine Sandy Land

Arid

DOI	10.3390/agronomy14040680
	Effects of Different Ecological Restoration Pattern on Soil Organic Nitrogen Components in Alpine Sandy Land
	Jiang, Haodong; Yang, Nairui; Qian, Hongyu; Chen, Gang; Wang, Wei; Lu, Jiankai; Li, Yaocen; Hu, Yufu
通讯作者	Hu, YF
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2024
卷号	14 期号:4
英文摘要	Ecological restoration can improve soil fertility and have a significant impact on the soil nitrogen cycle. Nitrogen (N) is an essential nutrient element for plant growth and development, and also an important factor limiting soil productivity. As an important part of soil nitrogen, the composition and proportion of soil organic nitrogen components can directly or indirectly affect the difficulty of soil organic nitrogen mineralization and nitrogen availability, and then affect soil fertility. However, the current studies on soil nitrogen under ecological restoration mainly focus on nitrogen accumulation and nitrogen mineralization, while there are relatively few studies on changes in soil organic nitrogen components, especially in alpine regions. Therefore, in this study, three restoration pattern of mixed forage (MG), single shrub (SA) and shrub combination (SG) that have been restored continuously for 15 years in northwest Sichuan, China, were taken as the research object, and natural sandy land (CK) without manual intervention was taken as the control. Through field sampling and laboratory analysis, the characteristics of the soil nitrogen content and its proportion to soil total nitrogen (TN) under ecological restoration in alpine sandy land in northwest Sichuan, China, were investigated, and the correlation between the nitrogen content and soil physicochemical properties was analyzed. The results showed that the three ecological restoration patterns significantly increased the contents of acylated ammonium nitrogen (AMMN), acid-lyzed amino sugar nitrogen (ASN), acid-lyzed amino acid nitrogen (AAN), acid-lyzed unknown nitrogen (HUN), acid-lyzed total nitrogen (AHN) and non-acid-lyzed nitrogen (NHN) in soil, and the change trend was consistent with that of soil TN. Ecological restoration improved soil nitrogen mineralization and storage capacity by increasing the proportion of AAN, HUN and NHN to soil TN, and the effect was most obvious in the MG pattern 20-40 cm and SG pattern 40-60 cm soil layers. In general, except ASN, the soil nitrogen content was positively correlated with the soil TN, soil water content (SWC) and soil organic carbon (SOC), and negatively correlated with the soil bulk density (BD) and pH. The results of this study will help us to understand the supply capacity of soil nitrogen under ecological restoration and provide a scientific basis for the selection of an ecological restoration mode and the improvement of the restoration effect and efficiency in alpine sandy land.
英文关键词	alpine sandy land ecological restoration soil organic nitrogen
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001209962000001
WOS关键词	AEOLIAN DESERTIFICATION ; GRAZING EXCLUSION ; CARBON ; DYNAMICS ; ACID ; PHOSPHORUS ; PLATEAU ; STORAGE ; CHINA
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402770
推荐引用方式 GB/T 7714	Jiang, Haodong,Yang, Nairui,Qian, Hongyu,et al. Effects of Different Ecological Restoration Pattern on Soil Organic Nitrogen Components in Alpine Sandy Land[J],2024,14(4).
APA	Jiang, Haodong.,Yang, Nairui.,Qian, Hongyu.,Chen, Gang.,Wang, Wei.,...&Hu, Yufu.(2024).Effects of Different Ecological Restoration Pattern on Soil Organic Nitrogen Components in Alpine Sandy Land.AGRONOMY-BASEL,14(4).
MLA	Jiang, Haodong,et al."Effects of Different Ecological Restoration Pattern on Soil Organic Nitrogen Components in Alpine Sandy Land".AGRONOMY-BASEL 14.4(2024).